2 × 2=, 4, 2 × 9=, 18, 3 × 3=, 9, 3 × 9=, 27, 4 × 4=, 16, 4 × 9=, 36, 5 × 5=, 25, 5 × 9=, 45, 6 × 9=, 54, 7 × 7=, 49, 7 × 9=, 63.

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